Dig deeper and find that this is actually a rumor!
There are basically two reasons for all kinds of remarks about the magical effect of vinegar shampoo:
1, vinegar is a weak acid, similar to the pH of scalp;
2. The acidity of vinegar can close the hair scales;
The first crack: vinegar is a weak acid in aqueous solution, with an acidity coefficient of 4.8; The sebum membrane on the outer layer of scalp is responsible for resisting the invasion of bacteria and environment, and its PH value is 5.5, which belongs to neutral protective layer and is used to maintain the acid-base balance of skin. It can be seen that long-term use of acetic acid shampoo will also change the acid-base environment of the scalp and even corrode the scalp cortex, which may be different from talking.
Second crack: at present, there is no phenomenon that acidic liquid can open hair scales. The main component of hair scales is keratin, which loves to absorb water and is easy to swell. When the hair is rubbed around, the hair skin tends to open up. In addition, the strong oxidant and high temperature used in hair dyeing and perming will also lead to the serious opening and inclination of hair scales.
It can be seen that the magical effect of shampoo with vinegar as the main component is not established in theory, but it may have some effect. That's just a DIY method that our parents thought of when there was no good shampoo, and it shouldn't be a myth.
1. It is rumored that "shampoo can open hair scales and conditioner can close hair scales", right?
In fact, shampoo can't open hair scales, which are actually opened by friction; The conditioner can't close the hair scales either. It only forms a lubricating layer at the gap where the hair scales are opened, which reduces the friction between hairs and prevents them from hurting each other.
2. Can shampoo replace conditioner?
Although many shampoos on the market now contain some lubricating ingredients such as cetyl alcohol and stearyl alcohol, they cannot replace hair conditioners. You will find that the hair smoothing effect brought by using conditioner alone is more obvious after using shampoo and conditioner alone.
However, because too many hair conditioners use silicone oil to achieve their lubricating effect, they are criticized by many people. After all, the risk of hair loss caused by silicone oil is indeed higher. There are few hair conditioners without silicone oil in the market, and only Bimengxuan hair conditioner is found at present, which has unique technology, does not contain silicone oil and has good hair care effect.
In short, washing your hair with vinegar is at most a small remedy, and it is difficult for the public to bear the vinegar smell similar to clothes that have been worn for a long time, so it is not suitable for long-term care. In fact, washing your hair with vinegar too frequently will also damage hair follicles, destroy scalp sebum membrane and make your hair unhealthy.
It can remove dandruff and make hair soft, dark and shiny.
Method 1: Dilute the vinegar with water at the ratio of 1: 10. Hair washed with vinegar will be particularly shiny.
Method 2: Put shampoo on your head for the first time every time you wash your hair. After washing, apply some shampoo appropriately. After foaming, pour in about 10-20 ml vinegar and rub together. After 3-5 minutes, rinse with clear water.
The main component of vinegar is acetic acid, which has a strong bactericidal effect and can protect skin and hair. Cleaning the skin with vinegar water can make the skin absorb some urgently needed nutrients, thus softening the skin and enhancing its vitality.
Black sesame and black beans are good assistants for black hair, but it should be noted that it should be used together with onion juice to really make black hair grow better and faster. Squeeze ginger and onion together, and finally add a little water of Huoxiang Zhengqi, and evenly stir it and apply it to the roots of white hair, which can well inhibit the growth of white hair and help black hair to grow again.
Does washing your hair with vinegar make your white hair black?
Washing your hair with vinegar can't make your hair black, and it may also cause irritation and damage to your scalp.
Oriental black hair, because there is melanin in hair. If there are many melanin particles in the hair shaft, the hair will be very black; When there are fewer melanin particles, the color of hair will become lighter, and the lack of melanin is the cause of white hair. But the melanin in the hair shaft is in the scalp, that is, at the epidermal base of the hair root. The hair we see is actually just a hair shaft. So when the hair grows black, it will always stay black. If it is white hair, it is white hair from the beginning.
The vinegar we eat is a condiment, and its effective component is acetic acid, which belongs to weak acid according to chemical classification. This acidic liquid has no effect on the color of hair. Whether you wash your hair with vinegar, or put vinegar on the hair shaft or even the hair root, it will not change the color of your hair. At the same time, if the concentration of vinegar is too high, it may also cause irritation and damage to the scalp.
Therefore, washing your hair with vinegar can neither blacken your hair nor prevent it from turning white.
This content was reviewed by Sun, the chief physician of Anesthesiology Department of Beijing Hospital of Traditional Chinese Medicine affiliated to Capital Medical University.
Click here to see the details of the doctor's answer.